- Radio Free Europe/Radio Liberty, Inc - Research Institute8
- Capra, Frank5
- Pallai, Péter5
- Bortstieber, Gertrud4
- Dallin, David J.4
- Hanák, Péter3
- Samizdat Archives3
- Koestler, Arthur2
- Nóvé, Béla2
- Royal Institute of International Affairs2
- United States. Department of State2
- American Federation of Labor1
- Ascoli, Max1
- Baker, Nina Brown1
- Balkan Section1
- Balogh, Eva S.1
- Balzak, S. S.1
- Berdiaev, Nikolaĭ1
- Berlin, Isaiah1
- Bishop, Robert1